Spine
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Systematic review of randomized and nonrandomized comparative studies. ⋯ N/A.
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Literature review. ⋯ N/A.
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Prospective, nonrandomized cohort. ⋯ NA.
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Biomechanical study and review of literature on expandable lumbar interbody fusion constructs. ⋯ N/A.
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A literature review. ⋯ 4.